Winding machine



Nov. l5, 1932.

R. M. HEINTz 1,887,683

WINDING MACHINE Filed oct. 2, 192s 3 Sheeps-Sheet 1 MMM Nov. l5, 1932.R. M. HElNTz 1,837,633

WINDING MACHINE Filed Oct. 2, 1923 3 Sheets-Sheet 2 FIEEI.

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Nov. 15, 1932. R M HE|NTZ 1,887,683

wINDING- MACHINE Filed 001,. 2. 1923 3 Sheets-Sheet 3 Won# M Arroz/vf KPatented Nov. ,15, 1932 UNITED STATES PATENT OFFICE RALPH M. HEINTZ, 0FSAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO CHICAGOTELEPHONE SUPPLY COMPANY, OF ELKHART, INDIANA, A COB- POBATION 0FDELAWARE WINDIN G MACHINE Application led October 2, 1923. Serial No.666,153.

This invention relates to a machine for winding coils, and moreparticularly to one adapted to wind an electrical conducting Wire orstrip on a support. Such coils are frequently used for example asresistance elements in rheostats, especially when a bare conductor isused, so as to permit a movable coitact arm to travel over the surfaceof the co1 It is one of the objects of my invention to provide a simpleand inexpensive winding machine of this character, whereby the coils mabe wound rapidly.

n many forms of small rheostats, the resistance element comprises a coilof wire of a single layer wound on a support having a circular form.This has the advantage that a contact arm, pivoted at the center of thecircular support, is capable of traversing the entire coil uponrotational movement thereof. It is another object of my invention toprovlde a machine capable of winding coils on a circular support.

In such machines it is highly desirable to vary the pitch of thewinding, so that the total number of turns accommodated on the coilsupportmay be chosen to suit the desired requirements as to resistanceand current carrying capacity. It is still another object of myinvention to provide a simple and easily adjusted machine whereby thiswinding pitch may be varied. 1

In many forms of wound resistances', the support upon which theresistance wire is wound is made from insulating material such as libre.rI take advantage of this fact in feeding this vsupport gradually to thewire, by employing a threaded member that engages and bites into thesupport, the pitch of the thread determining the pitch of the Winding onthe support.

My invention possesses other advantageous features, some of which withthe foregoing will be set forth at length in the followin description,where I shall outline in full that form of the invention which I haveselected for illustration in the drawings accompanying and forming partof the present specification. Although I have shown in the drawings butone embodiment of my invention,

I do not desire to be limited thereto, since the invention as expressedin the claims may be embodied in other forms also.

Referring to the drawings:

Figure 1 is a side elevation of a winding machine embodying myinvention;

Fig. 2 is an end elevation of the machlne shown in Fig. 1, taken fromthe right hand side thereof;

Fig. 3 is a top plan view of the same machine;

Fig. 4 is a diagrammatic view, similar to Fig. 3. but showing parts ofthe machine in an alternative position;

F ig. 5 is a fragmentary vertical sectional view of the machine,andillustrates certaln parts of the dri ving` mechanism;

Fig. 6 is a diagrammatic view used to explain the motions that takeplace in my machine;

Fig. 7 is a wiring diagram of the electric control that may beincorporated in my machine;

Fig. 8 is a plan view of one of the elements of my machine, whichelement serves as a guide for the support on which the wire is wound;and

Fig. 9 is a plan view of a resistance element as completely wound by theuse of my machine.

A base 11, (Figs. 1 to 4) serves as a support for substantially all ofthe parts of the winding machine. A standard 12, supported on the base11, provides for appropriate bearings in which the various rotatableelements may be journaled, particularly the devices that serve to holdand feed the support 13 (Figs. 3, 6 and 9) upon which the conductingwire 14 (Fig. 1) is to be wound. In the present instance, thc support ormember 13 is shown as arcuate in form, with flat plane faces, but ofcourse it may assume any other desired shape.

The principle of operation of the winding machine may perhaps be bestunderstood from a consideration of the diagram, Fig. 6. In this diagram,I have shown the support 13 in cross section, and as carried atsubstantially the exact center of a rotating chuck or holder l5. Anadvancer or feeder 16 is shown, which is intended to represent some formof worm or screw that bites at 17 into the fiat side of support 13. Bycausing a relative rotation between members 16 and 13, the action of thescrew threads of the feeder 16 will serve to advance the strip orsupport 13, and eut corresponding threads therein. The strip 13 willthus be advanced against the friction due to the tightening of the chuckor holder 15.

Since the support 13 is itself rotating, proper continuous engagementbetween it and the feeder 16 can be secured only by causing this feederto move bodily or revolve in a planetary manner, in unison with thesupport 13, so that the axis of the feeder 16 describes a closed curvesuch as a circle 18. In order to effect this result in a convenientmanner, the feeder 16 is rotatably supported on a common support uponwhich the chuck or holder 15 is mounted. The actual relative feedingrotation of feeder 16 about its own axis may also be convenientlyproduced in several of the member ways, one of which will be describedin connection with the embodiment disclosed. As the strip 13 is advancedand rotated, the wire 14 is fed thereto from a stationary guide.

With this preliminary explanation of the underlying principles of themachine, the further detailed explanation of the actual embodiment maybe more readily grasped. The support or standard 12 is provided with .abearing bushingy 19 (Figs. 1 and 5) which is stationarily supported inthe appropriately formed boss 20. Within this bushing is rotatablymounted the chuck support 21, which carries the chuck or holder 15 nearone end. In order to drive this member 21, a gear wheel 22 is fastenedto the member, as by the aid of screws 23 which ass through a flange 24on the huhof the w eel, and into the end face 21; ,this structure isclearly shown in Fig. 5. Meshing with the wheel 22 is a pinion 25 (Figs.2 and 3) which is fastened to a shaft 26. This shaft is journaled in aboss 27 of support 12, and carries at its other end a pulley 28, whichmay be driven by any appropriate source of motion, not "shown, wherebythe support 21 will be ro- 50 tated.

The details of the clam or chuck 15, which is carried by the rotatablesupport 21, and which serves to hold the insulation strip 13, may bestbe understood from a consideration of Figs. 2, 3, 5 and 8. The lowerportion 29 of the holder or chuck 15 is shown as formed integral withthe support 21 and having substantially a half-round form. Y An upperguide member 30 is fastened to this lower portion, and as shown mostclearly in Fig. 8, is provided with a guide slot 31. In the presentinstance this slot is arcuate, in order to. provide a guide for thearcuate strip 13 on which the resistance wire 14 is to be wound. Theslot 31 opens in the end face of the chuck 15, as shown most clearly inFig. 2, so that the strip 13 has at this opening, a substantially axialdirection. The bottom 32 of this slot, upon which the strip 13 isdisposed is arranged at such a level that the center of the strip 13,where it projects from this slot, coincides substantially with thecenter of rotation of the chuck 15. The member 30 may be fastened to thelower member 29 in any appropriate manner, as by the ald of the screws33 (Fig. 3)

In order to hold the strip 13. with a slight amount of friction againstthe bottom- 32 of slot 31, I make use of a roller 34 which is adapted toextend into the slot and to engage the upper surface of strip 13. Theroller 34 is pivoted in a pair of lugs 35 carried by a lever 36. Thislever is plvotally supported at 37 on a lug 38 carried by the upperguide 30. In order to urge this lever downward so as to produce thedesired force on the roller 34, a cam 39 (Fig. 2) is provided, whic ispivoted on an eye pin 40 passing thro gh lever 36 and fastened in theguide or clamp 30. A handle 41 is attached to the cam 39 for rotatingit.

The mechanism for ,advancing the stri 13 in the guide slot 31 will now edescri ed. The front portion (Fig. 8) of the guide slot 31 is cut awayas at 42, to permit a' threaded feeder or worm 43 to pass up into theslot and engage and bite into the lower surface of strip 13. To feed thestrip 13 therefore, it is necessary to rotate worm'43 on its axis, whichis parallel to but displaced from the axis of rotation of chuck 15. Topermit this rotation to take place, the worm 1s fastened as bythreading, to a rod or shaft 44 which is mounted rotatably support 21.It is thus evident that as this support rotates, the shaft 44 and worm43 have a planetary motion around the axis of support 21. The lowerchuck member 29 has a cut away portion 45 as shown most clearly in Figs.2 and 5, in the nature of a counterbore for the journal aperture 46,whereby the worm 43is well protected. The rotation of worm strip 13 bycuttin threads in the bottom thereof, is produce by holding the shaft 44against rotation about its own axis as regards a stationary point ofreference. For this pur ose the shaft 44 is pinned to a lever arm 47Fig. 1) as by the aid of pin 48, and this arm has a slot and pinconnection with a stationary element; the connection in this instance isformed by the/slot 49 in lever 47, and a pin 50 held in a'lug 51 on thebase 11. This connection permits arm47 to follow the planetary movementof the shaft 44, but prevents rotation of the shaft 44 as regards itsown axis. By referring to the diagram of Fig. 6, where element 16represents the worm, 1t is evident that under such circum- 43 forfeeding the but eccentrically in the y stances, each planetaryrevolution of feeder 16 in the path 18 will produce` the same feedingeffect as if the parts and 13 were stationary, and element 16 hadrotated once about its own axis. To make this feeding action clearer,the motion of a point 52 of feeder 16 may be analyzed. This point isjust 180 away from engagement with the strip 13; if now the planetarymotion is produced, the point 52 will remain at the bottom of the feeder16. After a planetary'movement ofy 180, this bottom point will be inengagement with the strip 13, since then the entire feeder 16 will bedisposed above the strip, and not below it, as in the diagram. Oncontinued movement of another 180 the point 52 will gradually return tothe position 'of Fig. 6, and the strip 13 will have been fed forward outof the slot opening by a distance equal to the pitch of the thread onworm 43.

One of the advantages of my invention resides in the fact that the worm43 may readily be removed from shaft 44, and another of different pitchsubstituted. In this Way it is possible to control the rate of feed ofthe strip, and thereby the spacing of the turns of wire 14 thereon. Dueto the great uniformity of the feed when produced by this means, it isentirely practicable to wind the Wire very'closely together without anylikelihoodof adjacent turns touching.

' The wire 14 is fed to the rotating strip or support 13 near the placewhere it extrudes out of that opening' of slot- 31, which is coaxialwith the rotation of clamp 15, as shown in Fig. 1. A winding guide 53 isprovided through which the wire is threaded from a source of supply. Incase the strip 13 is straight,I the guide 53 may be left stationary,since vunder such circumstances there can never be any interferencebetween the strip 13 and the guide. However, in the present instance thestrip 13 mayk extend so far out of the slot 32 on continued feeding byworm 43, that the guide 53 will be in vits path of movement. Thiscondition is illustrated in Fig. 3. In order to overcome this difficultyand to permit the support or strip 13 to be fed further withoutinterfering-with the guide 53, I arrange this guide in such a way thatit may be moved from the position of Fig. 3 tok that 'of Fig. 4, withoutinterfering with the feed of the wire 14 through the vertical opening84. To effect this result, I support the guide 53 on a yoke 54 (Fig. 1)which is pivoted on a vertical a'Xis by the aid of the shaft 55 in thesupport 11. The axis of this shaft passes through the center of thevertical guide opening 84, so that rotation of yoke 54 will in no Wiseaffect the point of applicationv of the wire 14 on the strip 13. Theguide 53 may be retained in the position of Fig. 3 by the aid of apivoted cat-ch 56 which engages a ratchet wheel 57 carried by the yokeshaft 55. A spring 58 fastened to the lower end of yoke 54 and to astationary upright tends to rotate the guide 53 to the position of Fig.4, but is normally prevented by the aid of the catch mechanism justdescribed. YA spring 59 urges the catch 56 to engaging position.

The movement of guide 53 toward the position of Fig. 4 is limited by astop pin 60, and in the other direction by another pin 61. Furthermore,if desired, a dash pot 62 may be connected to yoke 54 to prevent tooviolent movement of this yoke when the pawl 56 is released.

Although it is quite possible to perform the movement of the guide 53 byhand whenever the operator finds it necessary, I prefer to arrangematters in such a way that the guide is moved automatically' in responseto the movement of the supportl or strip 13 near to interferingposition. For this purpose I provide an electromagnet 63 for releasingcatch 56 at the proper time. For this purpose the electromagnct armatureis provided with a movable rod 64, which is connected to the catch'56 bythe aid of the collar 65 carried by rod 64, and a slotted fork 66fastened to the catch 56. Thel arrangement is such that energization ofmagnet (i3 causes the catch 56 to be rotated against the action ofspring 59, aseshown in Fig. 4, and permits spring 58 to pull' the guideto the position of this figure.

In order to make. the release of catch 56 automatic, I provide certaincontact making devices that control the circuit of the magnet (i3. Thusmounted on an insulation block 67 fastened to chuck 15 is a contactspring 68 *i (shown most clearly in Fig. 2). This spring is arranged tomake contact with a grounded screw 69 supported on a metal block 70 onchuck 15; however the spring 68 may be held away from the screw 69 bystrip 13 where it projects from that side of slot 32 which forms theentrance point for the strip. The contact spring 68 is disposed for thispurpose over this opening of the slot. Furthermore, it is of suchproportions that the strip 13 is withdrawn from beneath it just beforethe other end of the strip interferes with guide 53. As soon as thisoccurs', the contact spring 68 'connects with screw 69, and the magnet63 becomes energized. y

In order to complete the VAcircuit to contact spring 68, which must ofcourse rotatewith the chuck 15, I provide a collector ring arrangement.Inst-he present instance this is shown as made up of astationarycollector ringr 71. supported on an insulation ring 7?. fastened tobushing 19. An arm 73 carryinga spring pressed brush 74 is fastened toblock 67 and connected to the spring 68.

The arrangement is ,preferably such that as soon as magnet63accomplishes its purpose of releasing catch 56. it is deenergized. Inthis way there is a saving in current consumption. To effect thisresult, a pair of contact springs 75 and 76 are arranged in the magnetcircuit, as shown in Fig. 7, and

are normally in engagement. However, when the guide 53 is in theposition of Fig. 4, the yoke 54 serves to urge spring 75 out ofengagement with spring 76, and thereby to break the circuit. Aninsulation strip 77 is carried by the yoke 54 which is adapted tocontact with the spring to flex it to the open position. Both of thesesprings are mounted on an insulation block 78 fastened to the side offrame 12.

The complete circuit for the electromagnet 63 is indicated in Fig. 7.One side of the magnet winding may be grounded, as indicated at 78, theother side connecting, as by lead 79, to'one terminal of a source ofelectrical energy. The other terminal may be connected by lead 80 tospring 76; the remainder of thev circuit including collector ring 71,brush 74, spring 68, screw 69, and ground 81. While the strip 13 isholding spring 68 ofl:` of screw 69, the magnet 6 3 is deenergized.As-soon as the spring 68 connects with screw 69, the-electromagnetreleases the catch 56, guide 53 moves to the left hand position, spring75 is urged away from spring 76, and the magnet is deener fized.

Having now described the construction of the machine, I shall nowsummarize its operation. With the machine stationary, and guide 53latched in the position of Fig. 3, a worin 43 is fastened to shaft 44,which worm is chosen of the proper pitch for the winding .to beeffected. The clamping handle 41 is now released, so as to relievepressure on roller 34, and a. strip 13 is inserted in slot 31 betweenthis roller and the worm 43. The position of strip 13 for the start isadjusted, after which the pressure on roller 34 is applied by the aid ofhandle 41. The wire 14 of the desired size and material may now be ledthrough the guide aperture 82 of guide and anchored to the strip 13, inany appropriate manner. The machine may now bc rotated, each rotationserving to wind one turn on the strip 13 and to advance it by the pitchof the threads on worm 43. While the winding operation is in its firststages, the strip 13 projects out of the slot 31 under the spring 68;the guide 53 being at the right, this projection does not interfere withthe guide. Feeding movement of strip 13 far enough to withdraw it frombeneath spring 6.8 will cause the automatic movement of guide 53 to theleft, as described hereinbefore. Thewinding operation can now continueto conclusion without interference between the guide 53 and strip 13. Assoon as the Winding is completed. the machine is stopped. roller 34 isreleased, and the wound element withdrawn from the machine.

It is evident that the machine ma 7 readily be utilized for winding manydifferent kinds of elements, by simply choosing the proper worm feeder43,and by appropriately forming the slot for the accommodation of themember on which the wire is to be wound.

I claim:

1. In a winding machine, means for revolving about an axis va curvedmember upon which the winding is to be placed, and means for graduallyfeeding this member forward, comprising a threaded element having anaxis parallel to the first axis, and arranged to impart movement to themember.

2. In a winding machine, means gradually advancing a member upon whichthe winding is to be placed, comprising a threaded feeder having an axisparallel to the direction of advance of the member, the threads on saidfeeder being arranged to bite into and form threads in the memberforadvancing it.

3. In a winding machine, a rotatable guide having a slot for guiding aflat member which is to be wound, and a. feeder for the member supportedbelow the slot and adapted to engage the member for advancing it.

4. In a winding machine, means for rotating a flat member upon which thewinding is to be placed, and means for gradually feeding this member inan axial direction, comprising a threaded element having an axisparallel to that of the rotation of the member, some of the threads ofsaid element engaging the flat side of the member, and arranged toprovide relative movement of the threads and the member.

5. In a winding machine, means for gradually advancing a fiat memberupon which the winding is to be placed, comprising a threaded feederhaving an axis parallel to the direction of advance of thc member, thethreads on said element being arranged to bite into and form threads inthe fiat side of the member for advancing it.

6. In a. winding machine, a rotatable slotted guide for a flat memberupon which the winding is to be placed, said slot being arranged toguide thel member, and means for advancing said member in the directionof the axis of rotation, comprising a threaded worm having an axisdisplaced from the first axis, the threads of said Worm being arrangedto engage the fiat side of the member, means whereby said threaded wormis'revolved upon rotation of the member, about said first axis, andmeans whereby this planetary revolution causes relative .movementbetween the threads of the worm and the member.

7. In a winding machine, a rotatable support, a slotted clamp forholding a fiat member on the support, said member being the element uponwhich the winding is to be placed, the clamp being arranged so thatrotation of the support causes rotation of the fiat member about theaxis of the support, the slotl in the clamp serving as a. guide for themember, a shaft rotatabiy mounted on an eccentric but parallel axisinthe support, a

threaded worm on the support having a portion thereof extending into theslot for engaging the member, and means whereby the planetary movementof the worm as the support is rotated, will advance the member 1n theslot, comprising an arm rigidly fastened to the worm shaft, a stationarystand, and a sliding connection between the stand and the arm.

8. In a machine for winding a coil on a member of arcuate form, a guidehaving an opening for the member, means for rotating the guide so thatthe member describes a rotary motion -about a stationary axis passingthrough the opening, and means for advancing the member gradually ,outof the guide, comprising a threaded feeder arranged to bite into andform threads in the member for advancing it.

9. In a machine for winding a coil on a member of arcuate form, arotatable holder for the member, and means for advancing the member inthedirection of the axis of rotation, comprising a threaded worm havingan "axis displaced from the first axis, means whereby said worm isrevolved upon rotation of the member, about the first axis, and neanswhereby this planetary revolution causes relative movement between thethreads of the worm and the arcuate member.

10. In a winding machine, a rotatable holder having an arcuate slot forguiding an arcuate member having flat plane faces, upon which a coil isto be wound, and a feeder for the member supported below the slot andadapted to engage one of the flat faces of the nliember for advancingit, near the end of the s ot.

11. In a winding machine, means for rotating a flat, arcuate member uponwhich the winding is to be placed, and means for gradually feeding this.member in an axial direction so that this axis of rotation constantlypasses through the central point of a cross section of the member,comprisin a thread# ed feeder having an axis paralle to that of therotation of kthe member, some of the threads of said feeder enga `ng theflat side of the member, and arrange to provide relative movement of thethreads and the member.

12. In a winding machine, means for gradually advancinl a flat, arcuatemember upon which the winding is to be placed through an opening,comprising a threaded feeder having an axis parallel to the direction ofadvance of the member where it leaves the opening, the threads on saidfeeder being arranged to bite into and form threadsin the fiat side ofthe member and near the openin whereby the arcuate member may begradually passed through said opening.

13. In a winding machine, a rotatable guide having an arcuate slot foran arcuate fiat member upon which the winding is to be placed, said slotbeing arranged to guide the member and opening in an axial direction,and means for advancin said member out of the slot and in the directionof the axis of rotation, comprising a threaded worm having an axisdisplaced from said axis, the threads of said Worm being arranged toengage the yfiat side of the member and near the slot opening, meanswhereby said threaded worm is revolved upon rotation of the guide, aboutsaid axis, and means whereby this planetary revolution causes relativemovement between the threads of the worm and the member.

lll. In a winding machine, a rotatable support, a clamp having anarcuate slot therein opening in a direction coaxial with the rotation ofthe support, said slot serving as a guide for an arcuate flat memberupon which the winding is to be placed, a shaft rotatably mounted on aneccentric, but parallel axis in the support, a threaded worm on theshaft having a portion thereof extending into the slot near its coaxialopening for engaging the member, and means whereby the planetarymovement of the worm as the support is rotated, will advance the memberout of the opening, comprisin an arm rigidly fastened to the worm sha t,a stationary stand, and a sliding connection between the stand and thearm.

15. In a machine for winding material on an arcuate member, a rotatableholder for the member, the axis of rotation being such that it passesthrough the central point of a cross section of the member, means foradvancing said member from the holder so that the member is causedradually to move outwardly in an arcuate irection, a guide for feedingthe material to the member, and means for ,moving said guide out of theWay to the end of the rotating member when it projects far enough out ofthe holder.

16. In a machine for winding material on an arcuate member, a rotatableholder for the member, means for gradually advancing said member out ofthe holder so that it moves therefrom in an arcuate direction, a guidefor feeding the material to the member, and means for moving said guideso as to be free at all stages of the winding process from interferencewith the ends of the member as it rotates.

17. In a machine for winding material on an arcuate member, a rotatableholder for the member, means for gradually advancing said member out ofthe holder so that it moves therefrom in an arcuate direction, a guidefor feeding the material to the member, means for pivotally supportingsaid guide in such a Way that pivotal movement thereof will main-` tainthe point of feed of the material undisturbed, and means operative inresponse to the advancement of the member near to interfering positionwith the guide, for rotating said guide on its pivot out of the path ofthe end of the member.

yes'

-rial undisturbed, and means operative in response to the advancement ofthe member near to interfering ition with the guide, for rotating said1de on its pivot out of the path of the mem r, comprising anelectromagnet for causing the rotation to take place, and a pair ofcontacts controlling the magnet, said contacts being operated inresponse to the movement of the member out of the holder.

19, In a machine for windin material on an arcuate member, a rotatableolder for the member, means for gradually advancing said member out ofthe holder sothat it moves therefrom in an arcuate direction, a guidefor feedin the material to the member, means for pivota 1y supportingsaid guide in such a way that pivotal movement thereof will maintain thepoint of feed of the material undisturbed, and means o rative inresponse to the advancement o the member near to interfering positionwith the guide, for rotating said guide on its pivot out of the path ofthe memer, comprising an electromagnet for causing the rotation to takeplace, and a pair of contacts controlling the magnet and resilientlyurged to engage each other, said contacts bein arrange 1n the path offeed of the mem r out of the holder and in such a way that the memberpasses between them to prevent their engagement, whereby upon sufficientadvancement of the member, these contacts are permitted to engage.

20. In a machine for winding material on an arcuate member, a rotatableholder for the member, means for gradually advancing l said member outof the holder. so that it moves therefrom in an arcuate direction, a

ide for feeding the material to the memr, means for pivotally supportingsaid guide in such a way that pivotal movement thereof will maintain thepoint of feed of the material undisturbed, and means operative inresponse to theadvancement of the member near to interfering positionwith the guide, for rotatin said guide on its pivot out of the path othe member, comprising an electromagnet for causing the rotation to Ytake place, a pair of contacts energizing the magnet, said contacts beinoperated in response to the movement o the member out of the holder, anda pair of contacts operated by said pivotal movement of the guide todeener 'ze the electromagnet.

21, a machine for windin material on an arcuate melber, a rotatab eholderfor the member, means for gradually advancing said member out ofthe holder so that it moves therefrom in an arcuate direction, a

ide for feeding Kthe material to the memr, means for pivotallysupporting said i ide in such a way that pivotal m'ovement t ereof willmaintain the point of feed of the material undisturbed, and meansoperative in response-to the advancement ot the member near tointerfering position with the guide, for rotatin said guide on its pivotout of the path o the member, comprlsing au electromagnet for causingthe rotation to take place, a pair of contacts controlling the magnetand resilientl urged to engage each other, said contacts being arrangedin the path of feed of the member out of the holder and in such a waythat the member passes between them to whereby u on s cient advancementof the member, t ese contacts are permitted to engage and energize theelectromagnet, and a palr of contacts operated in. response to thepivotal movement of the guide to deenergize the electromagnet.

22. In a machine for winding material on an arcuate member, a rotatableholder for `the member, means for gradually advancing said member out ofthe holder so that it moves therefrom in an arcuate direction, a

ide for feeding the material toz the memgr, means for pivotallysupporting said guide in such a way that pivotal movement thereof willmaintain the point of feed of the material undisturbed, and meansoperative in response to the advancement of the member near tointerfering position with the guide, for rotating` said i e on its pivotout of the path of the en of the member com rising means resilientlyurging said gui e to rotate about its pivotal support, a catchrforpreventing said movement, an elecrevent their engagement,y

ioc-

tromagnet for releasing the catch, and con f 23. In a machine forwinding material on t an 'arcuate member, a rotatable holder for themember, means for gradually advancing said member-out of the holder sothat it moves therefrom in an arcuate direction, a guide for feeding thematerial to the member, means for pivotally supporting said guide insuch a way that pivotal movement thereof will maintain the point of feedof the material undisturbed, and means operative in response to theadvancement of the member near to interfering position with the guir'. Ifor rotating said guide on its ivot out of the path of the end of themem r comprising means resiliently urging said guide to rotate about itspivotal support, a catch for preventing sa1d movement, an electroma etfor releasing the catch, contacts operate in responseto the advancementof the member out of the holder for energizing the electromaiet, andcontacts operated in response to t e pivotal movement of the guide fordeenergizing the electroma et.

24. In a winding macihe, means for advancin a member upon which thewinding is to be p aced, said means including a worm having threads forengaging said member,

g and means for causing a relative rotary motion between said worm andmember.

25.. In a winding machine, means for rotating a member upoii which thewinding is to be placed, and means for advancing it in the direction ofthe axis of rotation, comprising a worm having threads for engaging saidmember, and means for cau'sin ya relative rotary movement between saimember and worm. v v

26. In combination a strip feeding chuck, means for rotating said chuck,a member having cutting threads for engaging said strip at the end ofthe chuck, and means for causing a wire to be wound automatically uponsaid -stri issuing from the chuck.

2 In an apparatus for winding a conductor on a supporting element, acutting tool, means for rotating the element and simultaneouslyadvancing it axially in engagement with the cutting tool, the said tooldelnng a Agroove therein, and means for causing the successive turns ofthe conductor to be spaced on the supporting element in accordance withthe grooves defined by the cutting tool.

28. A winding machine having, in combination, means to rotate a memberto be wound, a body having a plurality of spaced cutting edges adaptedto be pressed onto the rotating member at an angle thereof, and meansfor guiding the material being wound on the member.

29. A winding machine comprising means for rotating the member uponwhich the winding is to be laced, and means for advancing said mem er inthe direction of the axis of rotation, comprising a worm having threadsfor engaging said member and hav- 'ing an axis displaced from the firstaxis,

means whereby-said threaded worm is revolved about the first axis uponrotationv of the member, and means whereby this planetary revolutioncauses relative movement between the threads of the worm and the memi'.30. In a winding machine, means for rotating about an axis a member uponwhich a winding is placed,.means for delivering a Winding to saidmemberfor winding thereon by said rotation, and means having ositive pushingengagement with said mem er and including a threaded element having anaxis said rotating means for positively pushing said member in anendwise direction to distribute the winding along the member.

31. In a winding machine, a chuck rotatable about an axis and fixedagainst translagenerally parallel with the axis of rotation of tionalmovement, said chuck having a slot of a section to receive a member uponwhich a winding is placed, means for rotating said chuck to wind thewinding on said member,

,and means for simultaneously and positively long slot to receive amember upon which a lwinding is to be placed, means for rotating saidchuck to wind the winding on said member, and means having positiveadvancing engagement with said member and including a threaded elementhaving an axis parallel to said first, axis for advancing the memberthrough said slot and with respect to said chuck simultaneously with,the rotation of said chuck to distribute the winding along the member.

33. In a Winding machine, a chuck rotatable about an axis and having agenerally oblong slot to receive a member upon which a Winding is to beplaced, means for rotating said chuck to wind the winding on saidmember, and means having positive advancing engagement with said memberand including a threaded element for advancing the member through saidslot and with respect to said chuck simultaneously with the rotation ofsaid chuck to distribute the winding along the member.

In testimony whereof I allix m signature.

RALPH M. EIN TZ.

